Fabricated water retention base layer structure

The utility model relates to the technical field of pavement of sidewalks, in particular to an assembly type water-retaining base layer structure, which comprises a water-permeable support building block and a first water-retaining building block, the water-permeable support building block comprises one or more accommodating parts, the first water-retaining building block is arranged in the accommodating part, and the first water-retaining building block is arranged in the accommodating part. The fabricated water-retaining base layer structure is permeable and water-retaining, and is fast in construction and simple in later maintenance. 本实用新型涉及人行道路铺设技术领域，特别涉及一种装配式保水基层结构，装配式保水基层结构包括透水支撑砌块和第一保水砌块，所述透水支撑砌块包括一个或多个容纳部，所述第一保水砌块设于所述容纳部中，本实用新型的装配式保水基层结构既透水又保水，施工快，后期维护简单。